/*
  Splitpaid design tokens.

  Palette sampled from assets/banner.png and assets/paper_texture_v1.png:
    security-paper black     #07 09 08  -> --ink        (page ground, matches banner base)
    engraved panel black     #0C 0F 0E  -> --panel
    mint line pigment        #8F D9 BD  -> --mint       (guilloche linework in the art)
    bright mint highlight    #B7 EC D6  -> --mint-bright
    paper white              #EC F1 EE  -> --paper      (the banner wordmark ink)
    ledger amber (variance)  #D9 A9 4E  -> --amber      (reserved, off-split rows only)
    avatar glow indigo       #5C 79 C4  -> --indigo     (reserved, promised-share bars only)

  Type: Playfair Display (display serif, same register as the banner wordmark)
      + IBM Plex Sans (body, institutional finance)
      + IBM Plex Mono (addresses, amounts, ledger figures).
  Spacing scale: 8 / 12 / 16 / 24 / 32 / 48 / 72 / 104 px.
  Radius: 3px throughout (engraved certificate, not rounded SaaS card).
  Motion: one idiom only, a 160ms ease on color/border/opacity. No transforms on scroll.
*/

:root {
  --ink: #070908;
  --panel: #0c0f0e;
  --panel-alt: #101514;
  --rule: rgba(230, 240, 235, 0.11);
  --rule-strong: rgba(230, 240, 235, 0.2);
  --mint: #8fd9bd;
  --mint-bright: #b7ecd6;
  --mint-dim: rgba(143, 217, 189, 0.42);
  --amber: #d9a94e;
  --indigo: #5c79c4;
  --paper: #ecf1ee;
  --paper-dim: #a6b4ad;
  --paper-faint: #6e7d76;
  --radius: 3px;
  --max-width: 1140px;
  --ease: 160ms ease;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 300;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .brand-name, .footer-name {
  font-family: "Playfair Display", Georgia, "Times New Roman", serif;
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--paper);
  margin: 0 0 16px;
}

p { margin: 0 0 20px; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(7, 9, 8, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand { display: flex; align-items: center; gap: 11px; }

.brand-mark {
  width: 34px; height: 34px;
  border-radius: var(--radius);
  border: 1px solid var(--rule);
  display: block;
}

.brand-name {
  font-size: 21px;
  font-weight: 500;
  margin: 0;
  letter-spacing: 0.005em;
}

.site-nav {
  display: flex;
  gap: 30px;
  margin-left: auto;
}

.site-nav a {
  color: var(--paper-dim);
  font-size: 14px;
  font-weight: 400;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.site-nav a:hover { color: var(--mint-bright); border-bottom-color: var(--mint-dim); }

/* ---------- Token bar ---------- */

.token-bar {
  background: var(--panel-alt);
  border-bottom: 1px solid var(--rule);
}

.token-bar-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 11px;
  padding-bottom: 11px;
  flex-wrap: wrap;
}

.token-ticker {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mint-bright);
}

.chain-tag {
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-dim);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  padding: 3px 9px;
}

.token-ca {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: rgba(143, 217, 189, 0.05);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 6px 12px;
  color: var(--paper);
  cursor: pointer;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  transition: border-color var(--ease), background var(--ease);
}

.token-ca:hover { border-color: var(--mint-dim); background: rgba(143, 217, 189, 0.09); }

.token-ca-label {
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper-faint);
}

.token-ca-value {
  font-size: 12.5px;
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.token-ca-copied { display: none; font-size: 12.5px; color: var(--mint-bright); }
.token-ca.is-copied .token-ca-value { display: none; }
.token-ca.is-copied .token-ca-copied { display: inline; }

.token-buy {
  margin-left: auto;
  border: 1px solid var(--mint-dim);
  color: var(--mint-bright);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 7px 16px;
  border-radius: var(--radius);
  transition: background var(--ease), color var(--ease);
}

.token-buy:hover { background: var(--mint); color: #061410; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.01em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--ease), color var(--ease), border-color var(--ease);
  white-space: nowrap;
}

.btn-primary {
  background: var(--mint);
  color: #061410;
  padding: 13px 26px;
}

.btn-primary:hover { background: var(--mint-bright); }

.btn-ghost {
  border-color: var(--rule-strong);
  color: var(--paper-dim);
  padding: 13px 24px;
  background: none;
}

.btn-ghost:hover { border-color: var(--mint-dim); color: var(--mint-bright); }

.btn-small { padding: 9px 17px; font-size: 13.5px; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border-bottom: 1px solid var(--rule);
}

.hero-art {
  position: absolute;
  inset: 0;
  background-image: url("assets/paper_texture_v1.png");
  background-size: cover;
  background-position: 72% center;
  opacity: 0.85;
}

.hero-art::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(97deg, var(--panel) 0%, var(--panel) 34%, rgba(12, 15, 14, 0.82) 54%, rgba(12, 15, 14, 0.32) 78%, rgba(12, 15, 14, 0.5) 100%),
    linear-gradient(180deg, rgba(7, 9, 8, 0.55) 0%, transparent 28%, rgba(7, 9, 8, 0.6) 100%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding-top: 104px;
  padding-bottom: 104px;
}

.hero-copy { max-width: 640px; }

.eyebrow {
  display: inline-block;
  color: var(--mint);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 26px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--mint-dim);
}

.hero h1 {
  font-size: clamp(44px, 6.4vw, 78px);
  line-height: 1.02;
  letter-spacing: -0.018em;
  margin-bottom: 26px;
}

.tagline {
  font-family: "Playfair Display", Georgia, serif;
  font-style: italic;
  font-size: 22px;
  line-height: 1.5;
  color: var(--mint-bright);
  max-width: 560px;
  margin-bottom: 22px;
}

.hero-description {
  font-size: 16.5px;
  color: var(--paper-dim);
  max-width: 560px;
  margin-bottom: 32px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 48px; }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--rule);
  max-width: 620px;
}

.hero-meta > div {
  padding: 18px 26px 0 0;
  margin-right: 26px;
  border-right: 1px solid var(--rule);
}

.hero-meta > div:last-child { border-right: none; margin-right: 0; padding-right: 0; }

.hero-meta dt {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper-faint);
  margin-bottom: 5px;
}

.hero-meta dd { margin: 0; font-size: 14.5px; color: var(--paper); }

/* ---------- Sections ---------- */

.section {
  padding: 104px 0;
  /* The header is sticky, so an anchor jump must clear it or the h2 lands underneath. */
  scroll-margin-top: 84px;
}

.section-alt {
  background: var(--panel);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.split-head {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 32px;
  align-items: start;
  padding-bottom: 32px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--rule);
}

.section-kicker {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mint);
  margin: 9px 0 0;
}

.split-head h2 {
  font-size: clamp(28px, 3.6vw, 42px);
  line-height: 1.14;
  margin: 0;
  max-width: 740px;
}

.section-lead {
  font-size: 17.5px;
  color: var(--paper-dim);
  max-width: 720px;
  margin-bottom: 48px;
}

/* ---------- Problem ---------- */

.prose-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 72px;
  align-items: start;
}

.prose p {
  font-size: 17px;
  color: var(--paper-dim);
  max-width: 62ch;
}

.prose p:first-child {
  font-size: 19px;
  color: var(--paper);
  line-height: 1.6;
}

.prose p:last-child { margin-bottom: 0; }

.aside-card {
  border: 1px solid var(--rule);
  border-top: 2px solid var(--mint);
  border-radius: var(--radius);
  background: var(--panel-alt);
  padding: 32px 28px;
}

.aside-card h3 {
  font-size: 19px;
  line-height: 1.32;
  margin-bottom: 20px;
}

.tick-list { list-style: none; margin: 0 0 22px; padding: 0; }

.tick-list li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 14px;
  font-size: 15px;
  color: var(--paper-dim);
  line-height: 1.55;
}

.tick-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 12px;
  height: 1px;
  background: var(--mint);
}

.aside-note {
  font-size: 14px;
  color: var(--paper-faint);
  border-top: 1px solid var(--rule);
  padding-top: 18px;
  margin: 0;
}

/* ---------- Steps ---------- */

.steps { list-style: none; margin: 0; padding: 0; }

.step {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 32px;
  padding: 32px 0;
  border-top: 1px solid var(--rule);
}

.step:last-child { border-bottom: 1px solid var(--rule); }

.step-number {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mint);
  padding-top: 7px;
}

.step h3 { font-size: 24px; line-height: 1.26; margin-bottom: 12px; }

.step p {
  color: var(--paper-dim);
  font-size: 16px;
  max-width: 68ch;
  margin-bottom: 0;
}

/* ---------- Ledger ---------- */

.ledger-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.filter-group { display: flex; gap: 8px; flex-wrap: wrap; }

.filter-btn {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--paper-dim);
  background: none;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 8px 14px;
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.filter-btn:hover { color: var(--mint-bright); border-color: var(--mint-dim); }

.filter-btn.is-active {
  color: #061410;
  background: var(--mint);
  border-color: var(--mint);
}

.tolerance-note {
  margin: 0;
  font-size: 13px;
  color: var(--paper-faint);
}

.ledger-wrap {
  overflow-x: auto;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.28);
}

.ledger-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 940px;
  font-size: 14px;
}

.ledger-table thead th {
  text-align: left;
  padding: 14px 18px;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-weight: 500;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper-faint);
  background: var(--panel-alt);
  border-bottom: 1px solid var(--rule-strong);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: color var(--ease), background var(--ease);
}

.ledger-table thead th.num { text-align: right; }
.ledger-table thead th:hover { color: var(--mint-bright); }

.ledger-table thead th.col-status { cursor: default; }
.ledger-table thead th.col-status:hover { color: var(--paper-faint); }

.ledger-table thead th[aria-sort="ascending"],
.ledger-table thead th[aria-sort="descending"] { color: var(--mint-bright); }

.sort-arrow { display: inline-block; width: 11px; font-size: 10px; }
th[aria-sort="ascending"] .sort-arrow::after { content: "\2191"; }
th[aria-sort="descending"] .sort-arrow::after { content: "\2193"; }

.ledger-table tbody td {
  padding: 13px 18px;
  border-bottom: 1px solid rgba(230, 240, 235, 0.06);
  color: var(--paper);
  white-space: nowrap;
}

.ledger-table tbody tr {
  cursor: pointer;
  transition: background var(--ease);
}

.ledger-table tbody tr:hover td { background: rgba(143, 217, 189, 0.05); }
.ledger-table tbody tr.is-selected td { background: rgba(143, 217, 189, 0.09); }
.ledger-table tbody tr:last-child td { border-bottom: none; }

.ledger-table tbody tr.is-empty { cursor: default; }
.ledger-table tbody tr.is-empty td {
  text-align: center;
  color: var(--paper-faint);
  padding: 32px 18px;
}

.cell-date,
.cell-amount,
.cell-pct,
.cell-variance,
.cell-wallet { font-family: "IBM Plex Mono", ui-monospace, monospace; font-variant-numeric: tabular-nums; }

.cell-date { color: var(--paper-dim); font-size: 13px; }
.cell-amount, .cell-pct, .cell-variance { text-align: right; }

.cell-token {
  font-family: "Playfair Display", Georgia, serif;
  font-size: 16px;
  color: var(--mint-bright);
}

.cell-recipient { color: var(--paper); }

.recipient-role { display: block; font-size: 14px; }

.recipient-wallet {
  display: block;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11.5px;
  color: var(--paper-faint);
  letter-spacing: 0.02em;
}

.cell-variance.is-wide { color: var(--amber); }

.status-tag {
  display: inline-block;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius);
  border: 1px solid var(--rule-strong);
  color: var(--paper-dim);
}

.status-tag.is-match { color: var(--mint-bright); border-color: var(--mint-dim); }
.status-tag.is-drift { color: var(--amber); border-color: rgba(217, 169, 78, 0.45); }

.ledger-canary {
  margin: 14px 0 0;
  color: var(--paper-faint);
  font-size: 12px;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: 0.03em;
}

/* ---------- Detail panel ---------- */

.detail-panel {
  margin-top: 32px;
  border: 1px solid var(--rule);
  border-left: 2px solid var(--mint-dim);
  border-radius: var(--radius);
  background: var(--panel-alt);
  padding: 28px 30px;
}

.detail-empty { margin: 0; color: var(--paper-faint); font-size: 14.5px; }

.detail-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 16px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--rule);
}

.detail-head h3 { margin: 0; font-size: 26px; }

.detail-meta {
  margin: 0;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--paper-faint);
}

.detail-rows { display: grid; gap: 22px; }

.detail-row {
  display: grid;
  grid-template-columns: 268px 1fr 110px;
  gap: 24px;
  align-items: center;
}

.detail-label { min-width: 0; }

.detail-role { font-size: 15px; color: var(--paper); }

.detail-wallet {
  display: block;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11.5px;
  color: var(--paper-faint);
}

.bar-pair { display: grid; gap: 7px; min-width: 0; }

.bar-line { display: flex; align-items: center; gap: 12px; }

.bar-key {
  width: 74px;
  flex: none;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--paper-faint);
}

.bar-track {
  flex: 1;
  height: 8px;
  background: rgba(230, 240, 235, 0.07);
  border-radius: 1px;
  overflow: hidden;
  min-width: 60px;
}

.bar-fill { display: block; height: 100%; border-radius: 1px; }
.bar-fill.is-promised { background: var(--indigo); }
.bar-fill.is-recorded { background: var(--mint); }
.bar-fill.is-recorded.is-wide { background: var(--amber); }

.bar-value {
  width: 42px;
  flex: none;
  text-align: right;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 12px;
  color: var(--paper-dim);
  font-variant-numeric: tabular-nums;
}

.detail-verdict { text-align: right; }

.detail-note {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
  font-size: 14.5px;
  color: var(--paper-dim);
  max-width: 76ch;
}

/* ---------- Methodology ---------- */

.method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  margin-bottom: 72px;
}

.method-card { background: var(--panel); padding: 32px 30px; }

.method-card h3 {
  font-size: 21px;
  margin-bottom: 12px;
  color: var(--mint-bright);
}

.method-card p { color: var(--paper-dim); font-size: 15.5px; margin: 0; }

.faq-title { font-size: 26px; margin-bottom: 24px; }

.faq-item {
  border-top: 1px solid var(--rule);
  padding: 20px 0;
}

.faq-item:last-of-type { border-bottom: 1px solid var(--rule); }

.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-family: "Playfair Display", Georgia, serif;
  font-size: 19px;
  color: var(--paper);
  display: flex;
  align-items: baseline;
  gap: 14px;
  transition: color var(--ease);
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::before {
  content: "+";
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 16px;
  color: var(--mint);
  flex: none;
}

.faq-item[open] summary::before { content: "\2212"; }
.faq-item summary:hover { color: var(--mint-bright); }

.faq-item p {
  margin: 14px 0 0 28px;
  color: var(--paper-dim);
  font-size: 15.5px;
  max-width: 76ch;
}

/* ---------- CTA band ---------- */

.cta-band {
  position: relative;
  overflow: hidden;
  background-color: var(--ink);
  background-image:
    linear-gradient(90deg, rgba(7, 9, 8, 0.96) 0%, rgba(7, 9, 8, 0.82) 48%, rgba(7, 9, 8, 0.94) 100%),
    url("assets/banner.png");
  background-size: auto, 1600px auto;
  background-position: center, left -60px center;
  background-repeat: no-repeat;
  border-bottom: 1px solid var(--rule);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-top: 72px;
  padding-bottom: 72px;
}

.cta-inner h2 { font-size: clamp(26px, 3.2vw, 36px); margin-bottom: 10px; }

.cta-inner p {
  margin: 0;
  color: var(--paper-dim);
  font-size: 16.5px;
  max-width: 54ch;
}

/* ---------- Footer ---------- */

.site-footer { padding: 48px 0 40px; }

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 28px;
}

.footer-brand { display: flex; align-items: flex-start; gap: 12px; }

.footer-mark {
  width: 26px; height: 26px;
  border-radius: var(--radius);
  border: 1px solid var(--rule);
}

.footer-name { display: block; font-size: 17px; }

.footer-line { display: block; font-size: 13px; color: var(--paper-faint); }

.footer-links { display: flex; flex-wrap: wrap; gap: 22px; }

.footer-links a {
  font-size: 13.5px;
  color: var(--paper-dim);
  transition: color var(--ease);
}

.footer-links a:hover { color: var(--mint-bright); }

.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: var(--radius);
  border: 1px solid var(--rule);
  color: var(--paper-dim);
  transition: color var(--ease), border-color var(--ease);
}

.social-icon:hover { color: var(--mint-bright); border-color: var(--mint-dim); }

.footer-copy {
  width: 100%;
  margin: 0;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
  color: var(--paper-faint);
  font-size: 12.5px;
}

/* ---------- Responsive ---------- */

@media (max-width: 1000px) {
  .prose-grid { grid-template-columns: 1fr; gap: 48px; }
  .detail-row { grid-template-columns: 1fr; gap: 12px; }
  .detail-verdict { text-align: left; }
}

@media (max-width: 860px) {
  .container { padding: 0 24px; }
  .site-nav { display: none; }
  .header-inner { gap: 16px; justify-content: space-between; }
  .section { padding: 72px 0; }
  .hero-inner { padding-top: 72px; padding-bottom: 72px; }
  /* Narrow viewports put body copy straight over the engraving, so the scrim
     has to carry the whole width instead of fading out at the right edge. */
  .hero-art { background-position: 60% center; opacity: 0.7; }
  .hero-art::after {
    background:
      linear-gradient(180deg, rgba(7, 9, 8, 0.92) 0%, rgba(9, 12, 11, 0.8) 40%, rgba(7, 9, 8, 0.88) 100%);
  }
  .split-head,
  .step { grid-template-columns: 1fr; gap: 12px; }
  .section-kicker { margin-top: 0; }
  .step-number { padding-top: 0; }
  .method-grid { grid-template-columns: 1fr; }
  .token-buy { margin-left: 0; order: 5; width: 100%; text-align: center; }
  .token-ca-value { max-width: 190px; }
  .cta-inner { padding-top: 56px; padding-bottom: 56px; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  body { font-size: 15.5px; }
  .tagline { font-size: 19px; }
  .hero-meta > div {
    border-right: none;
    border-bottom: 1px solid var(--rule);
    width: 100%;
    margin-right: 0;
    padding: 14px 0;
  }
  .hero-meta > div:last-child { border-bottom: none; }
  .aside-card, .method-card, .detail-panel { padding: 24px 20px; }
  .faq-item p { margin-left: 0; }
  .ledger-controls { align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}